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MERCEDES A-CLASS (2017)

Running costs, reliability data, and common problems from 82,055 real MOT tests.

Annual Cost

£1,505

£125/month

MOT Pass Rate

88%

Good

Road Tax

£195

Flat rate/year

Insurance

Grp 12-25

1461cc Diesel

Solid Option

88% pass rate, £1505/year to run. 6 points above average.

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Diesel1461cc9 years old82,055 tests59k miles avg

Annual Running Costs

Fuel (Diesel, 1461cc)

~55 mpg

£905
Road Tax

Flat rate (post-2017)

£195
MOT Test
£55
Predicted Repairs
£350
Total per year£1,505
Per month£125/mo
Per week£29/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

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Reliability Verdict

88% MOT pass rate(Good)
0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.

At 9 years old, 88% of MERCEDES A-CLASSs from 2017 passed their MOT first time in 2026. That's based on 82,055 tests across the UK. The average mileage at this age is 58,788 miles.

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How Does It Compare?

Rank among 2017 cars294th of 579(top 51%)
Rank among MERCEDES models736th of 1,408(top 52%)
vs national average+6%(82% avg)
vs 2017 cars average+1%(87% avg)
vs MERCEDES average+1%(87% avg)

Mileage Analysis

58,788

Average miles

vs

66,600

Expected for age

The average 2017 MERCEDES A-CLASS has 58,788 miles on the clock, which is in line with the expected 66,600 miles for a 9-year-old car, suggesting normal everyday use.

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Best Year to Buy?

The most reliable year is the 2021 model with a 95% MOT pass rate, while the 1999 model has the lowest at 68%. The 2017 sits between the two at 88%.

MERCEDES A-CLASS by Year

YearPass RateTestsAvg Mileage
202195%20420,573 mi
202092%29625,924 mi
201990%17,95942,922 mi
201889%81,13448,596 mi
201788%82,05558,788 mi
201686%78,92568,387 mi
201585%57,43477,575 mi
201483%51,81786,660 mi
201383%34,58292,179 mi
201279%9,52574,077 mi
201178%9,39873,721 mi
201076%11,30079,296 mi
200975%12,53384,461 mi
200874%12,27289,507 mi
200774%11,03691,201 mi
200672%8,38991,943 mi
200573%5,55288,124 mi
200471%2,47084,566 mi
200371%2,44281,910 mi
200270%1,76683,515 mi
200172%1,09688,180 mi
200069%51680,481 mi
199968%52679,332 mi
199872%7285,941 mi

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About the 2017 MERCEDES A-CLASS

The 2017 MERCEDES A-CLASS is a small family car with a 1461cc diesel engine. 82,055 of these vehicles were MOT tested in 2026, making it one of the most commonly tested cars on UK roads. Among all cars from 2017, the average MOT pass rate is 87%, and this model beats that benchmark.

With an average of 58,788 miles at 9 years old, MERCEDES A-CLASS owners drive about as much as the UK average.

2017 MERCEDES A-CLASS Fuel Costs

The 1461cc diesel engine offers a reasonable balance between performance and economy. Expect around 55 mpg in mixed driving, which works out to roughly £905 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.

What does it cost to own a 2017 MERCEDES A-CLASS?

Total estimated annual running cost is £1,505 125/month), broken down as £905 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.

MERCEDES A-CLASS Reliability Trend

Newer MERCEDES A-CLASSs show better MOT pass rates than older ones, with an average improvement of 14 percentage points.

Buying a Used 2017 MERCEDES A-CLASS

At 9 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2021 model has the highest pass rate at 95%. With 82,055 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2017 MERCEDES A-CLASS's fuel type, age, and engine size, these are the most likely problem areas to check.

DPF (Diesel Particulate Filter)

Watch out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Watch out

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

EGR Valve

Watch out

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

Suspension Wear

Medium risk

Shock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2017 MERCEDES A-CLASS stacks up against similar cars for annual running costs, insurance, and tax.

CarPass RateFuel/yrTax/yrInsuranceTotal/yr
MERCEDES A-CLASS(2017)88%£905£195Grp 12-25£1505
VOLKSWAGEN GOLF(2017)91%£905£190Grp 12-25£1350-£155
FORD FOCUS(2019)89%£905£190Grp 12-25£1500-£5
MERCEDES A(2019)91%£905£190Grp 12-25£1350-£155
AUDI A3(2015)88%£905£135Grp 12-25£1445-£60

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.

Related Mercedes Models

Explore other Mercedes cars or similar models in the same category.

Related Guides

In-depth articles relevant to the Mercedes A-class.

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